Synthetic. opal （Japanese rough)

Syn. Opal-blue-words-J

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Color	Syn. opal （Japanese rough)
Size	10.0 mm
Shape	words
Quality range	A
Mohs Scale	5.5
Reflective Index	1.44-1.46
Density	1.9-2.1g/cm³
Temperature resistance (highest limit)	900°C
Remark	SiO2·nH2O

We can cut many shape and size and color.

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